Prepared food sold at Oxxo, 7/11 and other mini-supermarkets and convenience stores will be subject to 16 percent sales tax (IVA) as of July 1. This includes hot dogs, pizzas, tacos, gorditas, flautas and any other items prepared for immediate consumption, either on the store’s premises or otherwise. The tax is an extension of the 2013 fiscal reform package which removed IVA exemptions on certain foods.